package com.qhs.framework.utils;

import org.apache.commons.lang.StringUtils;
import org.krysalis.barcode4j.HumanReadablePlacement;
import org.krysalis.barcode4j.impl.code128.Code128Bean;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
import org.krysalis.barcode4j.tools.UnitConv;

import java.awt.image.BufferedImage;
import java.io.*;

/**
 * Created by zano on 2017/6/13.
 */
public class BarCodeUtil {

        /**
         * 生成文件
         *
         * @param msg
         * @param path
         * @return
         */
        public static File generateFile(String msg, String path) {
            File file = new File(path);
            try {
                generate(msg, new FileOutputStream(file));
            } catch (FileNotFoundException e) {
                throw new RuntimeException(e);
            }
            return file;
        }

        /**
         * 生成字节
         *
         * @param msg
         * @return
         */
        public static byte[] generate(String msg) {
            ByteArrayOutputStream ous = new ByteArrayOutputStream();
            generate(msg, ous);
            /*try {
                ous.write("全换机".getBytes());
            } catch (IOException e) {
                e.printStackTrace();
            }*/
            return ous.toByteArray();
        }

        /**
         * 生成到流
         *
         * @param msg
         * @param ous
         */
        public static void generate(String msg, OutputStream ous) {
            if (StringUtils.isEmpty(msg) || ous == null) {
                return;
            }

            //Code39Bean bean = new Code39Bean();
            Code128Bean bean = new Code128Bean();

            // 精细度
            final int dpi = 150;
            // module宽度
            final double moduleWidth = UnitConv.in2mm(1.0f / dpi);

            // 配置对象
            bean.setModuleWidth(moduleWidth);
           // bean.setWideFactor(3);
            bean.setHeight(12);
            bean.doQuietZone(true);
            bean.setQuietZone(1);
            bean.setMsgPosition(HumanReadablePlacement.HRP_BOTTOM);
            bean.setFontSize(2);


            String format = "image/png";
            try {

                // 输出到流
                BitmapCanvasProvider canvas = new BitmapCanvasProvider(ous, format, dpi,
                        BufferedImage.TYPE_BYTE_BINARY, true, 0);

                // 生成条形码
                bean.generateBarcode(canvas, msg);

                // 结束绘制
                canvas.finish();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
}
